Invention Grant
US08151907B2 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
有权
双电机系统和非旋转传感器，用于开发地下构造中的井筒
- Patent Title: Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
- Patent Title (中): 双电机系统和非旋转传感器，用于开发地下构造中的井筒
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Application No.: US12422084Application Date: 2009-04-10
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Publication No.: US08151907B2Publication Date: 2012-04-10
- Inventor: Duncan Charles MacDonald
- Applicant: Duncan Charles MacDonald
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Main IPC: E21B4/16
- IPC: E21B4/16
Abstract:
A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string is operated in a direction of rotation opposite that of the drilling string. A drill bit is rotated using a second motor that is coupled to the first motor.
Public/Granted literature
- US20090272578A1 DUAL MOTOR SYSTEMS AND NON-ROTATING SENSORS FOR USE IN DEVELOPING WELLBORES IN SUBSURFACE FORMATIONS Public/Granted day:2009-11-05
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